{"vulnerability": "cve-2021-26891", "sightings": [{"uuid": "b97f15c4-d67f-4344-834d-4c6428d5c3da", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-26891", "type": "seen", "source": "https://t.me/cibsecurity/24760", "content": "\u203c CVE-2021-26891 \u203c\n\nWindows Container Execution Agent Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26865.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-03-11T18:54:27.000000Z"}, {"uuid": "a3eb6825-10d6-4734-bb47-27d4e1af9201", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-26891", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/2974", "content": "Windows Server Core 20H2 Containers Vulns.:\n1. Host Registry Virtual Registry Provider Bypass EoP in Windows Srv Core 20H2 (PoC for CVE-2021-26864)\nhttps://bugs.chromium.org/p/project-zero/issues/detail?id=2129\n2. AppSilo Object Manager Root Directory EoP\n(PoC for CVE-2021-26891)\nhttps://bugs.chromium.org/p/project-zero/issues/detail?id=2127", "creation_timestamp": "2021-03-24T11:01:11.000000Z"}, {"uuid": "9be8b3e6-bc26-4ec8-ab2a-4c31bb0cc088", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-26891", "type": "seen", "source": "https://t.me/CyberSecurityTechnologies/3038", "content": "#Research\nNew vulnerabilities in Windows Server Containers: CVE-2021-24096, CVE-2021-26891,\u00a0CVE-2021-26865, CVE-2021-26864\nhttps://googleprojectzero.blogspot.com/2021/04/who-contains-containers.html", "creation_timestamp": "2021-04-02T11:01:09.000000Z"}, {"uuid": "7b59e7e9-0812-4282-bce1-19dc2cf3f302", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26891", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2687", "content": "", "creation_timestamp": "2026-09-11T14:00:05.455959Z"}, {"uuid": "362d58e9-4d3c-463f-88c9-f0f78aeb3a90", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26891", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2852", "content": "", "creation_timestamp": "2026-09-11T11:00:03.830429Z"}, {"uuid": "e127658f-b936-4b7d-86e9-429e3db35126", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26891", "type": "seen", "source": "https://t.me/cissp/2687", "content": "", "creation_timestamp": "2026-09-01T17:00:57.525326Z"}, {"uuid": "9afae248-0895-4634-a322-8e11eac82a62", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2021-26891", "type": "seen", "source": "https://t.me/cissp/2852", "content": "", "creation_timestamp": "2026-09-01T17:00:55.741969Z"}]}